Accrued Expenses and Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Accrued Expenses and Other Liabilities
Salaries and wages, Accrued Expenses	$ 77,468	$ 121,087
Salaries and wages, Non-Current Liabilities	0	0
Salaries and wages, Total	77,468	121,087
Deferred compensation, Accrued Expenses	1,530	1,405
Deferred compensation, Non-Current Liabilities	23,243	21,285
Deferred compensation, Total	24,773	22,690
Pension benefits, Accrued Expenses	3,147	3,120
Pension benefits, Non-Current Liabilities	485,794	546,681
Pension benefits, Total	488,941	549,801
Other postretirement benefits, Accrued Expenses	2,845	2,838
Other postretirement benefits, Non-Current Liabilities	38,504	40,154
Other postretirement benefits, Total	41,349	42,992
Insurance obligations, primarily self-insurance, Accrued Expenses	123,205	120,045
Insurance obligations, primarily self-insurance, Non-Current Liabilities	169,092	157,390
Insurance obligations, primarily self-insurance, Total	292,297	277,435
Residual value guarantees, Accrued Expenses	1,694	3,093
Residual value guarantees, Non-Current Liabilities	191	1,125
Residual value guarantees, Total	1,885	4,218
Accrued rent, Accrued Expenses	9,847	4,088
Accrued rent, Non-Current Liabilities	5,933	14,686
Accrued rent, Total	15,780	18,774
Environmental liabilities, Accrued Expenses	4,397	4,368
Environmental liabilities, Non-Current Liabilities	9,204	9,171
Environmental liabilities, Total	13,601	13,539
Asset retirement obligations, Accrued Expenses	5,579	5,702
Asset retirement obligations, Non-Current Liabilities	13,207	12,364
Asset retirement obligations, Total	18,786	18,066
Operating taxes, Accrued Expenses	78,768	81,820
Operating taxes, Non-Current Liabilities	0	0
Operating taxes, Total	78,768	81,820
Income taxes, Accrued Expenses	4,059	4,160
Income taxes, Non-Current Liabilities	59,034	74,147
Income taxes, Total	63,093	78,307
Interest, Accrued Expenses	24,091	30,410
Interest, Non-Current Liabilities	0	0
Interest, Total	24,091	30,410
Deposits, mainly from customers, Accrued Expenses	50,466	50,951
Deposits, mainly from customers, Non-Current Liabilities	6,235	7,544
Deposits, mainly from customers, Total	56,701	58,495
Deferred revenue, Accrued Expenses	18,688	20,698
Deferred revenue, Non-Current Liabilities	87	476
Deferred revenue, Total	18,775	21,174
Acquisition holdbacks, Accrued Expenses	4,353	7,422
Acquisition holdbacks, Non-Current Liabilities	1,333	0
Acquisition Holdbacks	5,686	7,422
Other, Accrued Expenses	57,276	46,423
Other, Non-Current Liabilities	10,145	11,564
Other, Total	67,421	57,987
Total Accrued Expenses	467,413	507,630
Total, Non-Current Liabilities	822,002	896,587
Total	$ 1,289,415	$ 1,404,217